嬉しい、喜ぶ、楽しむ・・・these all about joy, but...
What's a difference and which situation is the best to use every of this expressions?

Question

Answer

I try it. sorry terrible English :P

嬉しい＝grad or happy
楽しむ＝be fun or enjoy

if someone give you a present, you will be happy. (be fun? maybe not, i think)
same in Japanease. "楽しむ" needs some action.

私は野球を楽しむ(I enjoy playing baseball)
私は野球ができて嬉しい(I am grad to play baseball)

喜ぶ is a verb and third person view expression.
I am pleased. "私は喜んでいます" a little rare expression. "私は嬉しいです" is better.
but
She is pleased. "彼女は喜んでいます" is good.

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